Active X grouping not showing on another computer

Hi Guys,

Can someone help me with this. I have created a Active X based form and Grouped option buttons by selecting all and grouping them. This works fine on my computer (Windows 7 and Excel 2013). But, Cannot find the group (But the buttons are there) when I try to use the form on another computer (Windows 7 and Excel 2007). Could you please suggest what might be the problem?

Thanks,
Srini.

HI Guys- Managed to remove the grouping of the option buttons and this solved. I have included the code, before and after..
This might not be good way of coding, but works!
Before

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After

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